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May 4th, 2026 :: 2:49 pm CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated May 4th at 1:54 pm 
Overcast
Temperature:73°F Dew Point:54°F
Barometer:29.65 inHg Wind:N 41 Mph
Humidity:49.9% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
May 4th
Tuesday
May 5th
Wednesday
May 6th
Thursday
May 7th
Friday
May 8th
Thundershowers Showers Mostly Cloudy Mostly Sunny Mix of Cloud and Sun
76°F
60°F
49°F
54°F
46°F
57°F
41°F
61°F
48°F
 
 Decatur Detailed Weather Forecast  
 
Monday, May 4th, 2026
Afternoon Temperature: 74°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy.
Evening Temperature: 64°F
Mostly clear with showers likely. Chance of a thunderstorm. Windy.
Tuesday, May 5th, 2026
Overnight Temperature: 58°F
Mostly cloudy with a few showers. Windy at times.
Morning Temperature: 54°F
Cloudy with a chance of showers.
Afternoon Temperature: 55°F
Cloudy with a chance of showers.
Evening Temperature: 50°F
Cloudy with showers likely.
Wednesday, May 6th, 2026
Overnight Temperature: 48°F
Mostly cloudy with showers likely.
Morning Temperature: 51°F
Mostly cloudy.
Afternoon Temperature: 53°F
Mostly cloudy. Windy at times.
Evening Temperature: 46°F
Mostly cloudy with a chance of showers. Windy at times.
Thursday, May 7th, 2026
Overnight Temperature: 42°F
Clear with a slight chance of showers.
Morning Temperature: 48°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 57°F
A mix of sun and cloud. Windy at times.
Evening Temperature: 53°F
Clear. Windy at times.
Friday, May 8th, 2026
Overnight Temperature: 49°F
Mostly clear. Windy at times.
Morning Temperature: 52°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 59°F
Cloudy with a slight chance of showers.
Evening Temperature: 52°F
A mix of cloudy and clear skies with a slight chance of showers.
Saturday, May 9th, 2026
Overnight Temperature: 48°F
Clear.
Morning Temperature: 54°F
Sunny.
Afternoon Temperature: 67°F
Mostly sunny.
Evening Temperature: 64°F
A mix of cloudy and clear skies.
Sunday, May 10th, 2026
Overnight Temperature: 57°F
Mostly clear.
Morning Temperature: 61°F
Mostly sunny. Windy at times.
Afternoon Temperature: 72°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 62°F
Mostly cloudy. Windy at times.
Monday, May 11th, 2026
Overnight Temperature: 58°F
Mostly cloudy. Windy at times.
Morning Temperature: 59°F
Cloudy with a slight chance of showers. Windy at times.
Afternoon Temperature: 64°F
Mostly cloudy with a chance of showers.
Evening Temperature: 59°F
Clear with cloudy periods.
Tuesday, May 12th, 2026
Overnight Temperature: 55°F
Mostly clear.
Morning Temperature: 61°F
A mix of cloud and sun. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 68°F
A mix of cloud and sun with a chance of showers or thundershowers. Windy.
Evening Temperature: 63°F
Mostly clear with a chance of showers. Windy at times.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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